The Last Known Point Is a Question, Not an Answer

Before the Search: The Briefing Room | SAR Series Fall 2026

Article 2 of 7

“Where was the person last seen?” sounds simple.

In an actual missing person investigation, the answer may change several times. One witness remembers a conversation in the morning. Another thinks they saw the person that afternoon. A camera records someone with similar clothing. A vehicle appears at a location, but the driver cannot be identified. Each lead matters. They do not all carry the same weight.

I want four pieces of information attached to every proposed last known point: who or what is the source, what exactly was observed, when did it happen, and how was that time established? A timestamp can be wrong. A witness can be confident but mistaken. A family member can accurately report what the missing person intended to do without knowing whether they did it. This is why a chronology matters so much. Write down the observation and its source before drawing a route on the map. Keep contradictory information visible. If the supposed last point moves, record why. Otherwise a team may continue searching around a location that no longer has the strongest support. The point also has an operational meaning. It helps search managers decide what to examine first and where additional information is needed. That does not mean the person stayed nearby or traveled in a straight line. Terrain, roads, water, access points, transportation, and the person’s circumstances can all affect what happened next.

There is a human side to this, too. Families often hear “last known point” as a declaration of certainty. I prefer to explain what has been confirmed and what is still being tested. That language respects both the family and the work. A good search does not become weaker when we admit uncertainty. It becomes more adaptable. We can revise a working hypothesis when a better lead appears because we never hid the assumptions in the first place.

Series note: This article is part of Before the Search, our series leading up to the inaugural search and rescue class in LPA’s Mounted Forensic Operations System (MFOS) program. The NASAR Search & Rescue Academy will be held at the Laura Pettler & Associates International Forensics Institute at Crossroads Ranch in Monroe, North Carolina, November 15–22, 2026.